Animals最新文献_第5页

Jumping Characteristics of Broiler Breeder Hens at Different Perching Platform Heights.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050725

Xiaoliu Xue, Baoming Li, Qin Tong, Yang Wang, Peng Yin

{"title":"Jumping Characteristics of Broiler Breeder Hens at Different Perching Platform Heights.","authors":"Xiaoliu Xue, Baoming Li, Qin Tong, Yang Wang, Peng Yin","doi":"10.3390/ani15050725","DOIUrl":"10.3390/ani15050725","url":null,"abstract":"Excessive mating is a significant welfare concern for floor-reared broiler breeder hens. Perches have shown potential as a solution to mitigate this issue; however, limited research is available on the design parameters of perches. Understanding the jumping characteristics of broiler breeder hens is crucial for designing safe and functional perches. In this study, perching platforms were selected to ensure the safety of hens during jumps. Videos of hens performing voluntary jumps from varying heights (35, 40, 45, and 50 cm) were analyzed using Tracker (version 6.2.0) software. The results showed that the take-off latency (TL) and jump duration (JD) increased with height increases, with downward jumps exhibiting a 66.1% and 10.7% higher TL and JD than those of upward jumps (based on mean values), respectively. However, the latency to achieve balance (LAB) decreased by 76.5% during downward jumps (based on mean values). During upward jumps, both the wing-beating frequencies during the jump (WBJD) and after landing (WBL) increased with height increases. The interaction between the height and direction of jumping significantly affected the horizontal displacement (body) and angles (body and head) during the JL phase (p < 0.05). The body horizontal displacement during downward jumps was up to 70.3% higher than that during upward jumps (based on mean values), while the downward body angles were more minor than those during upward jumps. The lowest body and head angles of downward jumps were 42.2° ± 5.4° and 33.4° ± 5.6°, respectively. The results related to TL and LAB are expected to provide guidance for designing appropriate heights in perching facilities. Meanwhile, the findings on horizontal displacement and jump angles offer valuable insights for the safe distance and angle design between perching platforms.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11898682/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Colostrum Components and Milking Status Affecting Colostrum IgG Concentration.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050718

Shuji Kayasaki, Hitomi Satoh, Keitaro Oguchi, Kyoko Chisato, Rika Fukumori, Shin Oikawa

{"title":"Evaluation of Colostrum Components and Milking Status Affecting Colostrum IgG Concentration.","authors":"Shuji Kayasaki, Hitomi Satoh, Keitaro Oguchi, Kyoko Chisato, Rika Fukumori, Shin Oikawa","doi":"10.3390/ani15050718","DOIUrl":"10.3390/ani15050718","url":null,"abstract":"This study investigated IgG concentrations, bacterial contamination, and nutrient components of colostrum on dairy farms in eastern Hokkaido, Japan, to examine the factors making it possible to obtain high-quality colostrum. Colostrum samples were collected from 266 Holstein cows. The general criteria for high-quality colostrum are an IgG concentration of 50 g/L or higher and a total plate count of less than 100,000 CFU/mL. The percentage of samples with the criteria for IgG concentration was low, at 48.9%, but the percentage with the criteria for total plate count was high, at 86.5%. The colostrum Brix value was significantly correlated with the colostrum IgG concentration (r2 = 0.233, p < 0.001) and provided a rough estimate of that concentration. There was no association between the colostrum IgG concentration and milk components other than protein. For colostrum milking conditions, the time from calving to milking tended to be shorter for high-IgG colostrum than for low-IgG colostrum (p < 0.01). The likelihood of high-IgG colostrum increased 1.28-fold with first parity higher and decreased 0.92-fold with a 1 L higher milking volume (p < 0.01). The results suggest that, in addition to estimating the colostrum IgG concentration via the Brix value, the likelihood of obtaining high-IgG colostrum is increased by taking into account parity, milking volume, and time from calving to milking.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11898909/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unmixed Diet Versus Total Mixed Ration in Beef Cattle Fed High-Concentrate Diets: Effects on Methane Emissions, Animal Performance, and Rumen Fermentation.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050723

Amira Arbaoui, Gonzalo Gonzalo, Alejandro Belanche, Antonio de Vega

{"title":"Unmixed Diet Versus Total Mixed Ration in Beef Cattle Fed High-Concentrate Diets: Effects on Methane Emissions, Animal Performance, and Rumen Fermentation.","authors":"Amira Arbaoui, Gonzalo Gonzalo, Alejandro Belanche, Antonio de Vega","doi":"10.3390/ani15050723","DOIUrl":"10.3390/ani15050723","url":null,"abstract":"This study assessed the effects of using a total mixed ration (TMR), compared to distributing the concentrate and the forage separately, on the productive performance of beef cattle fed high-concentrate diets and on rumen fermentation characteristics, including methane production. Eighteen rumen-fistulated beef calves were fed a concentrate plus pelleted barley straw separately (CS; n = 9) or as TMR (n = 9). Average daily gain and intake of TMR and of straw and concentrate with the CS treatment were recorded. Digestibility was estimated using ashes insoluble in hydrochloric acid as a marker. Rumen liquid and gas samples were obtained, and the abundance of total bacteria, methanogens, protozoa, and anaerobic fungi was analysed. Animals were slaughtered at 500 kg live weight (LW), and dressing percentage and carcass classification were obtained. Another 49 animals for each treatment were used on a commercial farm to exclusively assess animal performance. The treatment (CS or TMR) did not significantly affect (p > 0.05) final LW, average daily gain, carcass dressing percentage, dry matter or digestible organic matter intake, digestibility values, production of methane and carbon dioxide, and abundance of microorganisms in the rumen. However, animals fed TMR had lower rumen pH (5.87 vs. 5.58, p = 0.041 for CS and TMR), suggesting a higher risk of experiencing rumen acidosis than those fed straw and concentrate separately. In conclusion, using a total mixed ration does not seem a suitable strategy to reduce methane production or prevent rumen acidosis in feedlot cattle.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11899474/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of Vanin-1 Gene Methylation in Fat Synthesis in Goose Liver: Effects of Betaine and 5-Azacytidine Treatments.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050719

Xinfang Wang, Yu Shao, Zhi Yang, Haiming Yang, Zhiyue Wang

{"title":"Role of Vanin-1 Gene Methylation in Fat Synthesis in Goose Liver: Effects of Betaine and 5-Azacytidine Treatments.","authors":"Xinfang Wang, Yu Shao, Zhi Yang, Haiming Yang, Zhiyue Wang","doi":"10.3390/ani15050719","DOIUrl":"10.3390/ani15050719","url":null,"abstract":"This study aimed to investigate the mediating effect of vanin-1 (VNN1) and its DNA methylation on the reduction in liver fat synthesis due to the role of betaine and 5-Azacytidine (5-AZA) in geese. Twenty-eight 35-day-old male Jiangnan white geese with similar body weight (BW) and good health conditions were randomized into four groups (seven birds per group). All the birds were housed with the same type of basal diet. The control group was treated with normal saline intraperitoneally (I.P.); the AZA group was treated I.P. with AZA (2 mg/kg); the betaine group was fed with betaine through the diet and treated I.P. with normal saline (1.2 g/kg); the AZA+betaine group was fed with betaine through the diet and treated I.P. with AZA. The results showed that the administration of AZA significantly increased serum levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), and VNN1 enzyme activity (p < 0.05); additionally, the expression levels of the molecules in various tissues were up-regulated to different extents, such as VNN1, fatty acid synthase (FAS), acetyl-CoA carboxylase (ACC), stearoyl-CoA dehydrogenase (SCD), and sterol regulatory element binding protein (SREBP); in contrast, the treatment of betaine reduced serum TC levels and the S-adenosylmethionine/S-adenosylhomocysteine (SAM/SAH) ratio; furthermore, hepatic DNA methylation in the AZA group was decreased in terms of the VNN1 promoter region. The results demonstrated that the expression of the VNN1 gene was negatively correlated with DNA methylation. This finding verified the key role of VNN1 and its methylation in the inhibition of liver lipid synthesis by betaine and provided a novel molecular mechanism for the regulation of liver lipid metabolism.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11899362/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Treatment of Canine Atlantoaxial Subluxation with a Modified Cervical Distraction-Stabilization Technique and Clinical Outcomes.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050716

Giuseppe Barillaro, Marco Tabbì, Simone Minniti, Nicola Maria Iannelli, Francesco Macrì, Claudia Interlandi

{"title":"Treatment of Canine Atlantoaxial Subluxation with a Modified Cervical Distraction-Stabilization Technique and Clinical Outcomes.","authors":"Giuseppe Barillaro, Marco Tabbì, Simone Minniti, Nicola Maria Iannelli, Francesco Macrì, Claudia Interlandi","doi":"10.3390/ani15050716","DOIUrl":"10.3390/ani15050716","url":null,"abstract":"Atlantoaxial subluxation (AAS) is a neurosurgical condition caused by joint hyperflexion and is characterized by the development of compressive cervical myelopathy. Various ventral fixation techniques have been described to permanently reduce the subluxation by long-term stabilization of the atlantoaxial joint. However, the rate of complications related to implant failure with these techniques remains high. The aim of this study was to describe a cervical distraction-stabilization technique using screws and PMMA to treat AAS and evaluate the clinical outcomes based on neurological and radiographic follow-up. Magnetic resonance imaging (MRI) was performed to confirm the diagnosis of AAS and identify any associated intraparenchymal lesions. Computed tomography (CT) scans were performed for surgical planning. No complications resulting in irreversible damage, surgical revision, or euthanasia protocol were observed. In the immediate postoperative period, the neurological scores showed an improvement of approximately two points from the preoperative values in all subjects. At the 6-month neurological examination (medium-term follow-up), 93% (13/14) of the dogs showed normal neurological function with no signs of pain. Based on clinical follow-up data, the cervical distraction-stabilization technique described in this study appears to be a valuable surgical alternative to treat AAS in toy-breed dogs.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11898964/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resolution of Exercise-Induced Syncope After Stenting of the Azygos Vein in a Dog with Segmental Aplasia and Azygos Continuation of the Levopositioned Caudal Vena Cava.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050722

Viktor Szatmári, Henk van den Broek, Abraham N Calero Rodriguez

{"title":"Resolution of Exercise-Induced Syncope After Stenting of the Azygos Vein in a Dog with Segmental Aplasia and Azygos Continuation of the Levopositioned Caudal Vena Cava.","authors":"Viktor Szatmári, Henk van den Broek, Abraham N Calero Rodriguez","doi":"10.3390/ani15050722","DOIUrl":"10.3390/ani15050722","url":null,"abstract":"A 1-year-old Maltese-Poodle mixed breed dog was referred to the cardiology service because of severe exercise intolerance and daily exercise-induced syncopal episodes. Physical examination revealed no abnormalities. Echocardiography showed intermittent underfilling of the heart. Abdominal ultrasound examination revealed a segmental aplasia of the caudal vena cava between the kidneys and the liver, and azygos continuation of the cava. The azygos vein dorsal to the right kidney showed a severe aneurysm with stasis of blood. Computed tomographic angiography showed that the right crus of the diaphragm was probably responsible for the intermittent compression of the dilated azygos vein, which was thought to have subsequently led to insufficient venous return to the heart. The underfilled ventricles could not produce sufficient cardiac output, which caused the assumed cerebral hypoperfusion due to presumed systemic arterial hypotension. Under general anesthesia a self-expanding nitinol stent was implanted into the azygos vein at the level of the diaphragm. All clinical signs resolved immediately after surgery. The dog remained free from clinical signs (6 months after surgery). This is the first report that describes the successful treatment of this congenital vascular anomaly. Ultrasonography of the caudal vena cava should be performed in dogs with unexplained syncope.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11898637/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Semen Quality, Testicular Cell Apoptosis, and Transcriptome Analysis Following Mild Scrotal Heat Stress in Wugu-Hu Crossbred and Hu Rams.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050724

Shikun Chen, Mingxu Jiang, Yanyun Wang, Qingjie Pan, Henry Annandale, Peter Charles Irons, Huansheng Dong

{"title":"Semen Quality, Testicular Cell Apoptosis, and Transcriptome Analysis Following Mild Scrotal Heat Stress in Wugu-Hu Crossbred and Hu Rams.","authors":"Shikun Chen, Mingxu Jiang, Yanyun Wang, Qingjie Pan, Henry Annandale, Peter Charles Irons, Huansheng Dong","doi":"10.3390/ani15050724","DOIUrl":"10.3390/ani15050724","url":null,"abstract":"Hu and Wugu × Hu rams underwent scrotal insulation to simulate mild heat stress, resulting in a 3.0 ± 0.1 °C increase in scrotal surface temperature. Semen samples were collected every five days from day 11 to 56, and testis samples immediately after insulation. Both breeds experienced similar semen quality reductions and recovery trends, including reduced motility, concentration and the percentage of morphologically normal, but on days 41 and 46, Wugu-Hu rams exhibited significantly lower sperm motility than Hu rams (p < 0.05). Wugu-Hu rams demonstrate more transcriptomic changes. Further GO analysis revealed enrichment in spermatogenesis-related processes, while KEGG analysis identified Oocyte meiosis and cell cycle pathways, with a downregulation of key genes (CDK1, CDK2, CDC20, and PLK1) indicating impaired meiosis in Wugu-Hu rams. In contrast, Hu rams showed minimal transcriptional changes, contrary to the transcriptomic results. The significantly increased apoptosis rate of Wugu-Hu sheep testicular cells (p < 0.05) suggests compensatory or post-transcriptional mechanisms mitigating functional impacts caused by transcriptomic changes. The conclusion is that mild scrotal heat stress affects sperm quality and testicular gene expression. Wugu-Hu rams demonstrate greater transcriptomic sensitivity, but this does not show significant differences in semen quality recovery due to the compensatory mechanism of cell apoptosis.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11898594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporal and Spatial Dynamics of Rodent Species Habitats in the Ordos Desert Steppe, China.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050721

Rui Hua, Qin Su, Jinfu Fan, Liqing Wang, Linbo Xu, Yuchuang Hui, Miaomiao Huang, Bobo Du, Yanjun Tian, Yuheng Zhao, Manduriwa

{"title":"Temporal and Spatial Dynamics of Rodent Species Habitats in the Ordos Desert Steppe, China.","authors":"Rui Hua, Qin Su, Jinfu Fan, Liqing Wang, Linbo Xu, Yuchuang Hui, Miaomiao Huang, Bobo Du, Yanjun Tian, Yuheng Zhao, Manduriwa","doi":"10.3390/ani15050721","DOIUrl":"10.3390/ani15050721","url":null,"abstract":"Climate change is driving the restructuring of global biological communities. As a species sensitive to climate change, studying the response of small rodents to climate change is helpful to indirectly understand the changes in ecology and biodiversity in a certain region. Here, we use the MaxEnt (maximum entropy) model to predict the distribution patterns, main influencing factors, and range changes of various small rodents in the Ordos desert steppe in China under different climate change scenarios in the future (2050s: average for 2041-2060). The results show that when the parameters are FC = LQHPT, and RM = 4, the MaxEnt model is optimal and AUC = 0.833. We found that NDVI (normalized difference vegetation index), Bio 12 (annual precipitation), and TOC (total organic carbon) are important driving factors affecting the suitability of the small rodent habitat distribution in the region. At the same time, the main influencing factors were also different for different rodent species. We selected 4 dominant species for analysis and found that, under the situation of future climate warming, the high-suitability habitat area of Allactaga sibirica and Phodopus roborovskii will decrease, while that of Meriones meridianus and Meriones unguiculatus will increase. Our research results suggest that local governments should take early preventive measures, strengthen species protection, and respond to ecological challenges brought about by climate change promptly.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11899341/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molasses-Based Block Supplements for Cattle Fed Endophyte-Infected Tall Fescue (Festuca arundinacea) Seed: Effects on Growth Performance, Circulating Biomarkers, Heat Stress, and Coccygeal Artery Diameter.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-03 DOI: 10.3390/ani15050717

Luis F B B Feitoza, Brad J White, James S Drouillard

{"title":"Molasses-Based Block Supplements for Cattle Fed Endophyte-Infected Tall Fescue (Festuca arundinacea) Seed: Effects on Growth Performance, Circulating Biomarkers, Heat Stress, and Coccygeal Artery Diameter.","authors":"Luis F B B Feitoza, Brad J White, James S Drouillard","doi":"10.3390/ani15050717","DOIUrl":"10.3390/ani15050717","url":null,"abstract":"Ergot alkaloids present in endophyte-infected tall fescue can cause a series of negative effects in exposed cattle. This study evaluated the effectiveness of molasses-based block supplements (MBSs) in alleviating vasoconstriction, which leads to reduced peripheral blood flow, heat stress, and impaired growth performance in cattle. A total of 100 crossbred steers were assigned to five treatment groups: a negative control with no tall fescue seed; a positive control with ergot-infected tall fescue seeds; and three MBS treatments, including a control block, a block containing menthol, and a block containing capsaicin. Blood flow was assessed through ultrasound imaging of the coccygeal artery, while thermal imaging was used to monitor body temperature regulation. Growth performance, feed intake, and blood biomarkers were also measured. Cattle consuming MBS had improved weight gain, greater arterial diameters, and enhanced thermoregulation compared to those without supplements. No significant differences were observed between the different MBS formulations. These results suggest that molasses-based block supplementation can help mitigate heat stress and poor growth performance associated with ergot alkaloid consumption, potentially providing a practical nutritional strategy for cattle producers managing cattle exposed to ergot alkaloids.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11899331/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dietary Schizochytrium sp. Meal Enhances the Fatty Acid Profile in Pirarucu (Arapaima gigas) Fillets with No Effect on Growth Performance and Health Status.

IF 2.7 2区农林科学

Animals Pub Date : 2025-03-02 DOI: 10.3390/ani15050712

André D Nobre, Renata V Mendonça, Ana Beatriz de S Farias, Fernando Y Yamamoto, Ligia U Gonçalves

{"title":"Dietary Schizochytrium sp. Meal Enhances the Fatty Acid Profile in Pirarucu (Arapaima gigas) Fillets with No Effect on Growth Performance and Health Status.","authors":"André D Nobre, Renata V Mendonça, Ana Beatriz de S Farias, Fernando Y Yamamoto, Ligia U Gonçalves","doi":"10.3390/ani15050712","DOIUrl":"10.3390/ani15050712","url":null,"abstract":"This study aimed to assess the impact of dietary supplementation with Schizochytrium sp. meal, a source of docosahexaenoic acid (DHA), on the growth, hemato-biochemical parameters, and fatty acid composition of juvenile pirarucu (Arapaima gigas). Two diets were used: a test diet (5%SZ) and a control diet (0 SZ). Juvenile pirarucu (561.3 ± 13.4 g; 47.5 ± 7.1 cm) were kept in recirculating aquaculture tanks and fed three times daily for 12 weeks. No significant differences in growth performance or adverse effects on hemato-biochemical parameters were found, except for hemoglobin and total protein. The fatty acid profile of the fillets from the fish fed the 5 SZ diet mirrored that of the Schizochytrium sp. meal, with increased levels of palmitic acid, DHA, and eicosapentaenoic acid (EPA), and decreased levels of linoleic and linolenic acids. The inclusion of Schizochytrium sp. meal reduced monounsaturated fatty acids from 39.6% to 32.0% and increased highly unsaturated fatty acids from 3.05% to 11.9% of total lipids. The DHA content was 9.45 times higher in the fillets of the fish fed 5 SZ, improving the n-3/n-6 ratio from 0.26 to 1.19. In conclusion, adding 5% Schizochytrium sp. meal enhances the nutritional quality of pirarucu fillets by increasing DHA and the n-3/n-6 ratio.","PeriodicalId":7955,"journal":{"name":"Animals","volume":"15 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11898834/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0